import pygame
import time
from settings import Settings
from ship import Ship
import game_functions as gf
from pygame.sprite import Group

def run_game():
    pygame.init()
    ai_settings = Settings()
    screen=pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
    pygame.display.set_caption("Alien Invasion")
    
    #创建一艘飞船
    ship = Ship(ai_settings,screen)  
    bullets = Group()  
    
    while True:
        gf.check_events(ai_settings, screen, ship, bullets)
        ship.update()
        gf.update_bullets(bullets)  
        gf.update_screen(ai_settings, screen, ship, bullets)

run_game()